select grade from (select grade,(select sum(number) from class_grade) as total, sum(number) over(order by grade) a, sum(number) over(order by grade desc) b from class_grade) t1 where a >= (total+1)/2 and b >=(total+1)/2 order by grade;中位数位置的公式应该是(total+1)/2
1

相关推荐

dian3b:挺妙的,如果上纲上线显得不合人心,但是这样以来既能监督适当摸鱼,也有一定的人文关怀。
摸鱼被leader发现了...
点赞 评论 收藏
分享
牛客网
牛客网在线编程
牛客网题解
牛客企业服务